Select entities in automation based on Regex

Configuration
1

Hi folks,

I have many Shelly devices in my home (about 50, more to come)
I want to add a button which triggers an automation which reboots all Shelly devices.

Every Shelly device has a Reboot button in Home Assistant. I need to select all entities which end in _reboot and press those.

I do not want to put all of them in by hand. I would need to maintain that automation and is likely to forget to put one in / out of the list if the setup changes.

An entity ID could look like this: button.bar_sihl_kronleuchter_reboot

I want to select all entities which start with “button.” and end in “_reboot”.

Any ideas how to achieve that? Maybe a custom python script? I have no clue how to do that with just YAML.

Thanks for any help!

Best regards
Alex

2

Configure your button to run the following Script (there’s no need for an Automation):

reboot_shelly_devices:
  sequence:
    - service: button.press
      target:
        entity_id: >
          {{ states.button
             | selectattr('object_id', 'search', '_reboot$')
             | map(attribute= 'entity_id') | list }}